Value Brand
Value Brand 316 Stainless Steel Threaded Union 1/2 in FNPT Class 3000
Three-piece 316 stainless steel union joins 1/2-inch NPT pipe ends for maintenance access, rated 2900 psi at 100°F and 2500 psi steam at 350°F
- Corrosion-resistant 316 stainless steel withstands harsh chemical environments
- Three-piece union design allows pipe disconnection without rotation
- Female NPT threads on both ends meet ANSI/ASME B1.20.1 standard
- Class 3000 rating handles 2900 psi at 100°F working pressure
- Rated for 2500 psi steam service at 350°F temperature
1/2 in FNPT 316 Stainless Union
This three-piece union joins two pipe ends without rotating the pipes, making it suited for maintenance points in industrial or commercial plumbing systems. The 316 stainless steel construction resists corrosion in aggressive fluid environments. It is designed for installers who need a reliable disconnect point rated for high-pressure service.
Class 3000 pressure performance
The fitting withstands a maximum working pressure of 2900 psi at 100°F and a maximum steam pressure of 2500 psi at 350°F. These ratings define the sealing limits under sustained load rather than short burst conditions. The three-piece design with body, nut, and mating seat maintains joint integrity across thermal cycles within the rated range.
Verify thread and pressure compatibility
Confirm that the existing piping uses 1/2 inch NPT threads matching ANSI/ASME B1.20.1 before ordering. Ensure the system operating pressure and temperature stay within the 2900 psi at 100°F or 2500 psi at 350°F steam limits. This union is not for applications requiring welded joints or larger nominal pipe sizes.
Highlights
- Corrosion-resistant 316 stainless steel withstands harsh chemical environments
- Three-piece union design allows pipe disconnection without rotation
- Female NPT threads on both ends meet ANSI/ASME B1.20.1 standard
- Class 3000 rating handles 2900 psi at 100°F working pressure
- Rated for 2500 psi steam service at 350°F temperature
Specifications
| Brand | ZORO SELECT |
|---|
Questions about this item
Does the 316 stainless steel union generate any heat or noise when pressurised to 2900 psi at 100°F?
No, the fitting is a passive component with no moving parts, so it produces no heat or noise under its rated working pressure.
What pipe preparation is required before threading the 1/2-inch female NPT ends?
You need 1/2-inch nominal pipe with male NPT threads and a suitable thread sealant or tape to make a leak-tight joint.
Will the Class 3000 rating match the pressure limits of existing ASTM A182 316 stainless piping in the same line?
Yes, the union conforms to ASTM A182 for material and ANSI/ASME B1.20.1 for threads, aligning with the same standards used for 316 stainless pipe systems.
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